JavaScript regex to find string -

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i have string , 2 words dictionary , trying know if in string there words not dictionary words.

var string = 'foobarfooba';  var patt = new regexp("[^(foo|bar)]");// words dictionary var res = patt.test(string);   console.log(res);//return false

it should return true because in string there 'ba', return false.

same phil commented in question, have rid of character class:

[^(foo|bar)] ^-- here --^

character classes used match (or not match if use ^) specific unsorted characters.

just use:

var patt = new regexp("(?:foo|bar)");// words dictionary

if want ensure string matches regex, can use:

^(?:foo|bar)+$

working demo

if want capture invalid words, can use regex capturing groups this:

^(?:foo|bar)+|(.+)$

working demo

match information

match 1 1.  [9-11]  `ba`

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